The Theatre Sterile Supply Unit (TSSU) is a dedicated sub-area in the operation theatre complex.
It stores sterile surgical items like drapes, sponges, gloves, and gowns.
Strict temperature and humidity control prevent contamination and maintain sterility.
Staff rooms are for staff rest, not storage of sterile items.
The holding area is where patients wait before surgery.
PASU is for patient recovery after anesthesia, not for storage.
Therefore, the correct answer is Theatre Sterile Supply Unit (TSSU).